.page-contact {
  --contact-line: rgba(169, 183, 198, 0.16);
  --contact-card: rgba(36, 59, 85, 0.34);
  --contact-section: clamp(48px, 7vw, 96px);
  position: relative;
  background: var(--ink-800);
  color: var(--mint);
  padding: clamp(92px, 13vw, 148px) 0 clamp(48px, 7vw, 88px);
  overflow: hidden;
}

.page-contact .shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}

.page-contact .contact-breadcrumb {
  margin-bottom: clamp(18px, 2.6vw, 30px);
}

.page-contact .breadcrumb-link,
.page-contact .breadcrumb-current,
.page-contact .breadcrumb-sep {
  font-size: 13px;
  color: var(--slate-light);
}

.page-contact .breadcrumb-current {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-contact .contact-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 44px);
  padding-bottom: var(--contact-section);
  border-bottom: 1px solid var(--contact-line);
}

.page-contact .contact-hero::before {
  content: "";
  position: absolute;
  top: -14%;
  right: -22%;
  width: clamp(240px, 44vw, 520px);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: repeating-radial-gradient(circle at center, transparent 0 20px, rgba(0, 229, 195, 0.15) 20px 21px);
  pointer-events: none;
  z-index: 0;
}

.page-contact .hero-narrative {
  position: relative;
  z-index: 1;
  min-width: 0;
}

.page-contact .contact-hero-title {
  margin: clamp(12px, 2vw, 20px) 0 0;
  font-family: var(--font-display);
  font-size: clamp(32px, 6.4vw, 62px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--mint);
}

.page-contact .contact-hero-lede {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.78;
  color: var(--slate-light);
}

.page-contact .hero-mail {
  margin-top: clamp(24px, 3.4vw, 40px);
  padding-block: clamp(16px, 2.4vw, 26px);
  border-top: 1px solid var(--line-cyan);
  border-bottom: 1px solid var(--contact-line);
  display: grid;
  gap: 10px;
  justify-items: start;
}

.page-contact .hero-mail-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-contact .hero-mail-value {
  font-family: var(--font-mono);
  font-size: clamp(17px, 3.4vw, 34px);
  font-weight: 700;
  line-height: 1.16;
  color: var(--cyan);
  overflow-wrap: anywhere;
}

.page-contact .hero-mail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;
}

.page-contact .hero-visual {
  margin: 0;
  position: relative;
  min-width: 0;
  z-index: 1;
}

.page-contact .hero-visual img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% 91%, 0 100%);
}

.page-contact .hero-visual::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 6%;
  width: 52%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--cyan));
  pointer-events: none;
}

.page-contact .media-caption {
  margin-top: 12px;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--slate);
}

/* ---------- 通用章节抬头 ---------- */
.page-contact .section-head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(22px, 3.2vw, 38px);
  max-width: 64ch;
}

.page-contact .section-index {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-contact .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(23px, 3.6vw, 40px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--mint);
}

.page-contact .section-note {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate-light);
}

/* ---------- 复制按钮 ---------- */
.page-contact .copy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 9px 18px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--ink-800);
  background: var(--orange);
  border: 1px solid var(--orange);
  border-radius: var(--radius-capsule);
  cursor: pointer;
  transition: transform 0.2s var(--ease), filter 0.2s var(--ease);
}

.page-contact .copy-btn:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
}

.page-contact .copy-btn:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
}

/* ---------- 三条通道 ---------- */
.page-contact .contact-channels {
  padding-block: var(--contact-section);
  border-bottom: 1px solid var(--contact-line);
}

.page-contact .channel-ladder {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .channel-card {
  padding: clamp(20px, 2.6vw, 28px);
  background: var(--contact-card);
  border: 1px solid var(--contact-line);
  border-top: 2px solid var(--line-cyan);
  min-width: 0;
}

.page-contact .channel-index {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--cyan);
}

.page-contact .channel-name {
  margin: 10px 0 6px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 800;
  color: var(--mint);
}

.page-contact .channel-mail {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: clamp(13px, 1.5vw, 15px);
  line-height: 1.5;
  color: var(--cyan);
  overflow-wrap: anywhere;
}

.page-contact .channel-desc {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--slate-light);
}

/* ---------- 咨询前准备 ---------- */
.page-contact .contact-prep {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 3.6vw, 52px);
  align-items: start;
  padding-block: var(--contact-section);
  border-bottom: 1px solid var(--contact-line);
}

.page-contact .prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-contact .prep-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 14px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--contact-line);
}

.page-contact .prep-num {
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--cyan);
}

.page-contact .prep-item h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  color: var(--mint);
}

.page-contact .prep-item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--slate-light);
}

.page-contact .prep-visual {
  margin: 0;
  min-width: 0;
  border: 1px solid var(--contact-line);
  padding: 10px;
}

.page-contact .prep-visual img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* ---------- 合作与报价 ---------- */
.page-contact .contact-quote {
  position: relative;
  margin-block: var(--contact-section);
  padding: clamp(26px, 4vw, 52px) clamp(20px, 3vw, 44px) clamp(44px, 5vw, 72px);
  background: linear-gradient(135deg, rgba(36, 59, 85, 0.78), rgba(7, 20, 38, 0.94));
  border-left: 3px solid var(--cyan);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), 0 100%);
}

.page-contact .contact-quote > .section-index {
  display: block;
  margin-bottom: 10px;
}

.page-contact .contact-quote .section-title {
  max-width: 22ch;
}

.page-contact .quote-lede {
  margin: clamp(14px, 2vw, 20px) 0 clamp(24px, 3vw, 36px);
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--slate-light);
}

.page-contact .quote-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-contact .quote-step {
  padding-top: 12px;
  border-top: 1px solid var(--line-cyan);
  min-width: 0;
}

.page-contact .quote-step span {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--orange);
}

.page-contact .quote-step strong {
  display: block;
  margin-top: 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  color: var(--mint);
}

.page-contact .quote-step p {
  margin: 5px 0 0;
  font-size: 14px;
  line-height: 1.62;
  color: var(--slate-light);
}

.page-contact .quote-note {
  margin-top: clamp(24px, 3vw, 36px);
  padding-top: 18px;
  border-top: 1px solid var(--contact-line);
  max-width: 66ch;
}

.page-contact .quote-note h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  color: var(--cyan);
}

.page-contact .quote-note p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate-light);
}

/* ---------- 服务时间 ---------- */
.page-contact .contact-hours {
  padding-block: var(--contact-section);
  border-bottom: 1px solid var(--contact-line);
}

.page-contact .hours-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.page-contact .hours-card {
  padding: clamp(20px, 2.6vw, 28px);
  background: var(--contact-card);
  border: 1px solid var(--contact-line);
  border-left: 3px solid var(--orange);
}

.page-contact .hours-big {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.6vw, 36px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-contact .hours-desc {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--slate-light);
}

.page-contact .hours-desc:last-child {
  margin-bottom: 0;
}

.page-contact .hours-details {
  border: 1px solid var(--contact-line);
  background: transparent;
  min-width: 0;
}

.page-contact .hours-details summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 18px clamp(18px, 2.4vw, 26px);
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  color: var(--mint);
  cursor: pointer;
  list-style: none;
}

.page-contact .hours-details summary::-webkit-details-marker {
  display: none;
}

.page-contact .hours-details summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--orange);
}

.page-contact .hours-details[open] summary::after {
  content: "—";
}

.page-contact .hours-details p {
  margin: 0;
  padding: 0 clamp(18px, 2.4vw, 26px) 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate-light);
}

.page-contact .hours-details p:last-child {
  padding-bottom: 22px;
}

/* ---------- 地址 ---------- */
.page-contact .contact-address {
  padding-block: var(--contact-section);
  border-bottom: 1px solid var(--contact-line);
}

.page-contact .address-plate {
  display: grid;
  gap: 6px;
  padding: clamp(20px, 2.8vw, 32px);
  border: 1px dashed var(--line-cyan);
  background: rgba(0, 229, 195, 0.035);
}

.page-contact .plate-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-contact .plate-value {
  margin: 0 0 16px;
  font-size: clamp(15px, 1.8vw, 18px);
  line-height: 1.72;
  color: var(--mint);
  overflow-wrap: anywhere;
}

.page-contact .plate-value--last {
  margin-bottom: 0;
  font-family: var(--font-mono);
  color: var(--slate-light);
}

/* ---------- 问题分类切换 ---------- */
.page-contact .contact-ask {
  padding-block: var(--contact-section);
  border-bottom: 1px solid var(--contact-line);
}

.page-contact .ask-switcher {
  position: relative;
}

.page-contact .ask-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-contact .ask-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(20px, 2.6vw, 28px);
}

.page-contact .ask-tab {
  padding: 9px 18px;
  font-size: 14px;
  font-weight: 700;
  color: var(--slate-light);
  border: 1px solid var(--contact-line);
  border-radius: var(--radius-capsule);
  cursor: pointer;
  transition: color 0.18s var(--ease), background 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-contact .ask-tab:hover {
  color: var(--mint);
  border-color: var(--line-cyan);
}

.page-contact #ask-fee:checked ~ .ask-tabs label[for="ask-fee"],
.page-contact #ask-browser:checked ~ .ask-tabs label[for="ask-browser"],
.page-contact #ask-legacy:checked ~ .ask-tabs label[for="ask-legacy"],
.page-contact #ask-partner:checked ~ .ask-tabs label[for="ask-partner"] {
  color: var(--ink-800);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-contact #ask-fee:focus-visible ~ .ask-tabs label[for="ask-fee"],
.page-contact #ask-browser:focus-visible ~ .ask-tabs label[for="ask-browser"],
.page-contact #ask-legacy:focus-visible ~ .ask-tabs label[for="ask-legacy"],
.page-contact #ask-partner:focus-visible ~ .ask-tabs label[for="ask-partner"] {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
}

.page-contact .ask-panel {
  display: none;
  padding-top: 20px;
  border-top: 1px solid var(--line-cyan);
}

.page-contact #ask-fee:checked ~ .ask-panels .ask-panel--fee,
.page-contact #ask-browser:checked ~ .ask-panels .ask-panel--browser,
.page-contact #ask-legacy:checked ~ .ask-panels .ask-panel--legacy,
.page-contact #ask-partner:checked ~ .ask-panels .ask-panel--partner {
  display: block;
}

.page-contact .ask-panel h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 800;
  color: var(--mint);
}

.page-contact .ask-lead {
  margin: 0 0 14px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate-light);
}

.page-contact .ask-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-contact .ask-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--slate-light);
}

.page-contact .ask-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 1px;
  background: var(--cyan);
}

/* ---------- 延伸阅读 ---------- */
.page-contact .contact-next {
  padding-top: var(--contact-section);
}

.page-contact .contact-next .section-title {
  font-size: clamp(21px, 3vw, 32px);
  margin-bottom: clamp(20px, 2.6vw, 30px);
}

.page-contact .next-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-contact .next-card {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  grid-template-areas:
    "icon title"
    "icon desc";
  gap: 2px 12px;
  padding: 18px 20px;
  border: 1px solid var(--contact-line);
  background: rgba(11, 31, 58, 0.5);
  text-decoration: none;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-contact .next-card:hover {
  border-color: var(--line-cyan);
  background: rgba(36, 59, 85, 0.5);
}

.page-contact .next-card:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-contact .next-index {
  grid-area: icon;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.5;
  color: var(--orange);
}

.page-contact .next-card strong {
  grid-area: title;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  color: var(--mint);
}

.page-contact .next-desc {
  grid-area: desc;
  font-size: 14px;
  line-height: 1.6;
  color: var(--slate-light);
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-contact .hours-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .page-contact .next-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-contact .next-card {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "icon"
      "title"
      "desc";
    gap: 6px;
  }
}

@media (min-width: 900px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    align-items: start;
  }

  .page-contact .channel-ladder {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-contact .channel-card:nth-child(2) {
    margin-top: 30px;
  }

  .page-contact .channel-card:nth-child(3) {
    margin-top: 60px;
  }

  .page-contact .contact-prep {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  }

  .page-contact .quote-steps {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 1160px) {
  .page-contact .contact-hero {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    gap: clamp(40px, 4.4vw, 72px);
  }

  .page-contact .channel-ladder {
    gap: 20px;
  }

  .page-contact .channel-card:nth-child(3) {
    margin-top: 76px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-contact .copy-btn,
  .page-contact .next-card,
  .page-contact .ask-tab {
    transition: none;
  }

  .page-contact .copy-btn:hover {
    transform: none;
  }
}
<<<END>>>